Portion of a sanitary napkin



FIG. 1 is a perspective view of a portion of a sanitary napkin embodying our new design;

FIG. 2 is both an elevation front view and an elevation back view of the portion of the sanitary napkin of FIG. 1;

FIG. 3 is both an elevation left view and an elevation right view of the portion of the sanitary napkin of FIG. 1;

FIG. 4 is a top plan view of the portion of the portion of the sanitary napkin of FIG. 1; and,

FIG. 5 is a bottom plan view of the portion of the sanitary napkin of FIG. 1. 

I claim the ornamental design for a portion of a sanitary napkin, as shown and described. 